Emeritus Professor Geoff Fincher at the University of Adelaide's School of Agriculture, Food and Wine says researchers have identified the genetic change which explains how wild barley shifted from dropping its grain to the ground at maturity to the grain staying in the ear.

Even in your wildest imagination you couldn't describe the opal mining town of Lightning Ridge as a gardener's paradise. But Ashley Steed is successfully growing fish and a variety of fresh vegetables using an aquaponics system. Read more